I have just started investigating this very topic and would appreciate everyone’s input – especially sources for nitrogen in central MD. I am leaning towards nitrogen because it is clean, dry, and requires no maintenance. From the reading that I have done it seems that it would be a long time before the cost of nitrogen would surpass the cost of a compressor (assuming a $1300 compressor).

I have just started investigating this very topic and would appreciate everyone's input - especially sources for nitrogen in central MD. I am leaning towards nitrogen because it is clean, dry, and requires no maintenance. From the reading that I have done it seems that it would be a long time before the cost of nitrogen would surpass the cost of a compressor (assuming a $1300 compressor).